[go: up one dir, main page]

WO1992007516A1 - Instrument chirurgical - Google Patents

Instrument chirurgical Download PDF

Info

Publication number
WO1992007516A1
WO1992007516A1 PCT/DE1991/000838 DE9100838W WO9207516A1 WO 1992007516 A1 WO1992007516 A1 WO 1992007516A1 DE 9100838 W DE9100838 W DE 9100838W WO 9207516 A1 WO9207516 A1 WO 9207516A1
Authority
WO
WIPO (PCT)
Prior art keywords
instrument according
drive
push rod
rod
handle
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/DE1991/000838
Other languages
German (de)
English (en)
Inventor
Stefan Koscher
Johann Würtz
Karl-Heinz Weber
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Koscher & Wuertz GmbH
Original Assignee
Koscher & Wuertz GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from DE4106797A external-priority patent/DE4106797C2/de
Application filed by Koscher & Wuertz GmbH filed Critical Koscher & Wuertz GmbH
Publication of WO1992007516A1 publication Critical patent/WO1992007516A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B10/00—Instruments for taking body samples for diagnostic purposes; Other methods or instruments for diagnosis, e.g. for vaccination diagnosis, sex determination or ovulation-period determination; Throat striking implements
    • A61B10/02—Instruments for taking cell samples or for biopsy
    • A61B10/06—Biopsy forceps, e.g. with cup-shaped jaws
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods
    • A61B17/32—Surgical cutting instruments
    • A61B17/320016—Endoscopic cutting instruments, e.g. arthroscopes, resectoscopes
    • A61B17/32002—Endoscopic cutting instruments, e.g. arthroscopes, resectoscopes with continuously rotating, oscillating or reciprocating cutting instruments
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods
    • A61B17/32—Surgical cutting instruments
    • A61B17/3201—Scissors
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods
    • A61B17/28—Surgical forceps
    • A61B17/29—Forceps for use in minimally invasive surgery
    • A61B17/2909—Handles
    • A61B2017/2912—Handles transmission of forces to actuating rod or piston
    • A61B2017/2923—Toothed members, e.g. rack and pinion

Definitions

  • the invention relates to a surgical instrument, in particular a suction punch for taking tissue samples, with a scissor jaw, which can be actuated from a handle or the like by means of at least one push rod or the like.
  • a large number of surgical instruments have a scissor jaw so that, for example, a tissue sample can be taken from the human body or other surgical interventions, such as in particular separating cuts, can be carried out. All these surgical instruments are usually operated manually, with one or both elements of the scissor jaw being connected to scissor-like handles via a push rod, pull rope, wire rod or the like. Especially when a large number of tissue samples are to be taken, manual operation is tedious and exhausting. The cutting force to be applied also depends on the skills of the operator and is difficult to determine manually.
  • the present invention relates in particular to all clamping and cutting surgical instruments, such as scissors, punches, pliers, clamps, etc.
  • the present invention has for its object to provide a surgical instrument of the above. To develop a way in which cutting force and cutting sequence are automatically controlled.
  • the push rod or the like is connected to a drive.
  • the operation of the surgical instrument is made independent of the skills of the operator, so that a multitude of cutting sequences can take place without the operator's strength waning.
  • the drive which is advantageously designed as an electric motor, has a right / left rotation. It should be designed so that the drive direction is changed at the push of a button, or that a change can be made continuously or after a predetermined time. Known electronic aids are used for this.
  • the drive has corresponding control devices which switch the drive off or on when a certain cutting force is exceeded.
  • control devices which switch the drive off or on when a certain cutting force is exceeded.
  • this is also possible by appropriate design of a gear assigned to the drive.
  • the drive should preferably have a drive shaft which transmits its rotation to the push rod by mechanical means.
  • a drive shaft which transmits its rotation to the push rod by mechanical means.
  • corresponding spindle drives with a threaded spindle and ball screw drives or the like are conceivable here.
  • a pinion is preferred, which sits on the drive shaft and engages with a corresponding toothing on the push rod. As a result, the rotational movement of the drive shaft is converted into a linear movement of the push rod.
  • a motor with a relatively high speed will be preferred.
  • a DC motor with 12,000 revolutions per minute was used in the test stage.
  • a reduction gear is necessary.
  • a gearbox with a gear ratio of 2,000: 1 or 1,000: 1 is recommended. This also controls the cutting force. It is sufficient if the transmission can be switched over in individual stages. The entire regulation is carried out by appropriate control electronics.
  • the drive shaft In the case of the transmission of the rotary movement of a drive shaft to a linear movement of the push rod, it is advisable for the drive shaft to run transversely to the push rod or its toothing.
  • the toothing which is in engagement with the toothed pinion, can either be molded into the push rod itself or a sleeve, which is then placed on the push rod. There should be no limit to the invention here.
  • the push rod will be designed differently. If only one separation is to take place, the push rod is made of solid material. On the other hand, if, for example, a tissue sample is suctioned off after cutting, this is advantageously done by means of a sleeve-shaped rod, the interior of which forms a suction channel. As is known, this sleeve rod slides in an outer sleeve rod and, together with it, forms the scissor jaw. In this exemplary embodiment, the inner sleeve rod is then connected to a vacuum source, by means of which the tissue sample can be suctioned through the suction channel in the inner sleeve rod.
  • Figure 1 is a plan view of a drive according to the invention for a surgical instrument
  • FIG. 2 is a side view of the drive according to the invention according to Figure 1;
  • FIG. 3 shows a longitudinal section through an exemplary embodiment of a surgical instrument which is used in connection with the drive according to FIG. 1;
  • Figure 4 is a plan view of individual elements of the drive according to the invention according to Figure 1;
  • Figure 5 is a block diagram representation of the control of the drive.
  • a suction punch 1 which has two sleeve rods pushed into one another.
  • An outer sleeve rod 2 is stationary relative to a screw connection 3 or the like, while an inner sleeve rod 4 has a smaller diameter than the outer sleeve rod 2 and slides in the outer sleeve rod 2.
  • the inner sleeve rod 4 actuates a cutting element 5 of a scissor jaw 6, a counter element 7 to the cutting element 5 being part of the outer sleeve rod 2.
  • the inner sleeve rod 4 is connected to the cutting element 5 in an articulated manner via a pivot pin 8, while the cutting element 5 forms a swivel joint 9 with the outer sleeve rod 2.
  • the cutting element 5 rotates about this swivel joint 9 and, in cooperation with the counter element 7, can thus take a tissue sample or the like from inside a human body.
  • the inner sleeve rod 4 also forms a suction channel 10, which, not shown, is connected to a vacuum source. In this way, a cut tissue sample from the scissor jaw 6 passes in the direction of arrow x through the suction channel 10 into a collecting device, also not shown in detail.
  • the outer sleeve rod 2 can be placed together with the screw connection 3 on a handle 11, as shown in FIGS. 1 and 2. It is not shown that the inner sleeve rod 4 passes through the handle 11 and opens into a connecting nipple 12 for connecting, for example, a suction hose.
  • a drive 13 is connected to the handle piece 11 and can be operated by a button 14.
  • a drive shaft 15, indicated in FIG. 4, of the drive 13 runs perpendicular to the inner sleeve rod 4, which, as previously described, is designed as a push rod.
  • a pinion 16 is placed, which cooperates with a toothing 17 on the inner sleeve rod 4.
  • a separate sleeve 18 provided with the toothing 17 is pushed onto the inner sleeve rod 4.
  • the toothed pinion 16 transmits the rotational movement of the drive shaft 15 into a linear movement of the inner one Sleeve rod 4, which results in an actuation of the scissor jaw 6.
  • the scissor jaw 6 can be closed at certain intervals by means of an electronically controlled change in the rotary movement of the drive shaft, and tissue samples can thus be taken. It is also possible to adjust the cutting force, which can also be controlled electronically.
  • the drive is preferably a DC electric motor, which is supplied via a corresponding connector 19.
  • this motor should make about 12,000 revolutions per minute, a reduction gear 20 being arranged between it and the drive shaft 15.
  • This transmission 20 has a gear ratio of 2,000: 1 or 1,000: 1.
  • the drive is switched on using button 14. This resets the entire system. The further operation of the instrument then also takes place via the button 14. Pressing the button 14 closes and opens the scissor jaw 6. This is done by setting the drive 13 to the left or right.
  • the electronic control is designed so that the driving force remains constant by a current or voltage control.
  • An overload control is built in to protect the drive.
  • the drive is defined as an actuator. All functions come from the control.
  • the rest position is also adjustable, this being done by an electronic evaluation.

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Surgery (AREA)
  • Medical Informatics (AREA)
  • Animal Behavior & Ethology (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Veterinary Medicine (AREA)
  • Molecular Biology (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Pathology (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Surgical Instruments (AREA)

Abstract

Dans un instrument chirurgical, en particulier dans une découpeuse aspirante pour le prélèvement d'échantillons de tissu, comportant un bec en forme de cisaille actionnable depuis une poignée ou similaire au moyen d'au moins une tige de poussée ou similaire, la tige de poussée ou similaire doit être en communication avec un moyen d'entraînement (13). Ce moyen d'entraînement (13) est un moteur électrique tournant à droite et/ou à gauche.
PCT/DE1991/000838 1990-11-05 1991-10-28 Instrument chirurgical Ceased WO1992007516A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DEP4035088.6 1990-11-05
DE4035088 1990-11-05
DEP4106797.5 1991-03-04
DE4106797A DE4106797C2 (de) 1990-11-05 1991-03-04 Chirurgisches Instrument

Publications (1)

Publication Number Publication Date
WO1992007516A1 true WO1992007516A1 (fr) 1992-05-14

Family

ID=25898251

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE1991/000838 Ceased WO1992007516A1 (fr) 1990-11-05 1991-10-28 Instrument chirurgical

Country Status (1)

Country Link
WO (1) WO1992007516A1 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4308051A1 (de) * 1992-10-17 1994-04-21 Stefan Koscher Chirurgisches Instrument
US5683359A (en) * 1992-11-18 1997-11-04 Symbiosis Corporation Arthroscopic surgical instruments having suction capability
US5897507A (en) * 1996-11-25 1999-04-27 Symbiosis Corporation Biopsy forceps instrument having irrigation and aspiration capabilities
US6926676B2 (en) 1996-11-25 2005-08-09 Boston Scientific Scimed, Inc. Biopsy instrument having irrigation and aspiration capabilities
US7204811B2 (en) 1996-11-25 2007-04-17 Boston Scientific Miami Corporation Proximal actuation handle for a biopsy forceps instrument having irrigation and aspiration capabilities
US7347828B2 (en) 1996-11-25 2008-03-25 Boston Scientific Miami Corporation Suction adapter for medical instrument
US8936598B2 (en) 2009-01-14 2015-01-20 DePuy Synthes Products, LLC Spinal disc preparation tool

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2547185A1 (de) * 1975-10-22 1977-04-28 Hennig Juergen Von hand zu haltendes chirurgisches instrument mit zwei gegeneinander bewegbaren arbeitsarmen
DE2737014A1 (de) * 1977-08-17 1979-03-01 Wolf Gmbh Richard Endoskop zum aufschlitzen von harnroehren-strikturen
US4530357A (en) * 1983-04-18 1985-07-23 Pawloski James A Fluid actuated orthopedic tool
US4601290A (en) * 1983-10-11 1986-07-22 Cabot Medical Corporation Surgical instrument for cutting body tissue from a body area having a restricted space
US4644951A (en) * 1985-09-16 1987-02-24 Concept, Inc. Vacuum sleeve for a surgical appliance
US4770174A (en) * 1983-01-21 1988-09-13 Brimfield Precision, Inc. Rotary cutting scissors for surgery
US4940061A (en) * 1989-11-27 1990-07-10 Ingress Technologies, Inc. Biopsy instrument

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2547185A1 (de) * 1975-10-22 1977-04-28 Hennig Juergen Von hand zu haltendes chirurgisches instrument mit zwei gegeneinander bewegbaren arbeitsarmen
DE2737014A1 (de) * 1977-08-17 1979-03-01 Wolf Gmbh Richard Endoskop zum aufschlitzen von harnroehren-strikturen
US4770174A (en) * 1983-01-21 1988-09-13 Brimfield Precision, Inc. Rotary cutting scissors for surgery
US4530357A (en) * 1983-04-18 1985-07-23 Pawloski James A Fluid actuated orthopedic tool
US4601290A (en) * 1983-10-11 1986-07-22 Cabot Medical Corporation Surgical instrument for cutting body tissue from a body area having a restricted space
US4644951A (en) * 1985-09-16 1987-02-24 Concept, Inc. Vacuum sleeve for a surgical appliance
US4940061A (en) * 1989-11-27 1990-07-10 Ingress Technologies, Inc. Biopsy instrument

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4308051A1 (de) * 1992-10-17 1994-04-21 Stefan Koscher Chirurgisches Instrument
US5683359A (en) * 1992-11-18 1997-11-04 Symbiosis Corporation Arthroscopic surgical instruments having suction capability
US5897507A (en) * 1996-11-25 1999-04-27 Symbiosis Corporation Biopsy forceps instrument having irrigation and aspiration capabilities
US6926676B2 (en) 1996-11-25 2005-08-09 Boston Scientific Scimed, Inc. Biopsy instrument having irrigation and aspiration capabilities
US7204811B2 (en) 1996-11-25 2007-04-17 Boston Scientific Miami Corporation Proximal actuation handle for a biopsy forceps instrument having irrigation and aspiration capabilities
US7297121B2 (en) 1996-11-25 2007-11-20 Boston Scientific Scimed, Inc. Biopsy instrument having irrigation and aspiration capabilities
US7347828B2 (en) 1996-11-25 2008-03-25 Boston Scientific Miami Corporation Suction adapter for medical instrument
US7833167B2 (en) 1996-11-25 2010-11-16 Boston Scientific Miami Corporation Proximal actuation handle for a biopsy forceps instrument having irrigation and aspiration capabilities
US8936598B2 (en) 2009-01-14 2015-01-20 DePuy Synthes Products, LLC Spinal disc preparation tool
USRE47172E1 (en) 2009-01-14 2018-12-25 DePuy Synthes Products, Inc. Spinal disc preparation tool

Similar Documents

Publication Publication Date Title
DE69834350T2 (de) Rongeur
DE69218688T2 (de) Zange
DE4431561C2 (de) Medizinisches Handhabungsgerät
EP0605763B1 (fr) Poinçonneuse à tissu
DE3802651C2 (de) Medizinische Zange, insbesondere Arthroskopiezange
DE102005029165B4 (de) Biegezange und Biegezangensystem für chirurgische Elemente
DE29616210U1 (de) Handhabe für chirurgische Instrumente
EP1996091A2 (fr) Instrument chirurgical
DE19835445B4 (de) Behandlungswerkzeug für ein Endoskop
EP3673725A1 (fr) Dispositif de coupe
EP0321884B1 (fr) Pince
EP3015081A1 (fr) Instrument chirurgical dote d'un dispositif de commande manuel
WO1992007516A1 (fr) Instrument chirurgical
DE2811869A1 (de) Trepan fuer die keratoplastik
EP1440756B1 (fr) Dispositif de coupe motorisé
EP0159453A1 (fr) Instrument chirurgical avec poignée
EP0050203A2 (fr) Levier de réglage, notamment pour la présélection de la vitesse de déplacement dans des machines agricoles autopropulsées
EP1750599A1 (fr) Partie de prehension d'un instrument chirurgical
DE4106797C2 (de) Chirurgisches Instrument
EP0021089A2 (fr) Poste de travail
DE19812101A1 (de) Vorrichtung zur endoskopischen Entnahme von Gewebeproben
DE10347733A1 (de) Motorisch verstellbares Röntgengerät
DE2932344A1 (de) Vorrichtung zur verstellung einer kopfstuetze
EP0154282A2 (fr) Dispositif pour prélèvement d'échantillons
DE4333746A1 (de) Chirurgisches Instrument

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): JP US

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): AT BE CH DE DK ES FR GB GR IT LU NL SE

122 Ep: pct application non-entry in european phase